import { ViewEngine } from './view-engine';

/**
 * 实体树视图界面引擎
 *
 * @export
 * @class TreeViewEngine
 * @extends {ViewEngine}
 */
export class TreeViewEngine extends ViewEngine {
  /**
   * 树部件对象
   *
   * @type {*}
   * @memberof TreeViewEngine
   */
  public tree: any;

  /**
   * Creates an instance of TreeViewEngine.
   *
   * @memberof TreeViewEngine
   */
  constructor() {
    super();
  }

  /**
   * 初始化引擎
   *
   * @param {*} options
   * @memberof PickupViewEngine
   */
  public init(options: any): void {
    this.tree = options.tree;
    super.init(options);
  }

  /**
   * 引擎加载
   *
   * @memberof TreeViewEngine
   */
  public load(): void {
    super.load();
    if (this.getTreeView() && this.isLoadDefault) {
      const tag = this.getTreeView().name;
      this.setViewState2({ tag: tag, action: 'load', viewdata: this.view.viewparams });
    } else {
      this.isLoadDefault = true;
    }
  }

  /**
   * 部件事件
   *
   * @param {string} ctrlName
   * @param {string} eventName
   * @param {*} args
   * @memberof TreeViewEngine
   */
  public onCtrlEvent(ctrlName: string, eventName: string, args: any): void {
    super.onCtrlEvent(ctrlName, eventName, args);

    if (Object.is(eventName, 'load')) {
      this.onLoad(args);
    }
    if (Object.is(eventName, 'selectionchange')) {
      this.onSelectionChange(args);
    }
  }

  /**
   * 部件加载完
   *
   * @param {*} args
   * @memberof TreeViewEngine
   */
  public onLoad(args: any): void {}

  /**
   * 选中处理
   *
   * @param {any[]} args
   * @memberof TreeViewEngine
   */
  public onSelectionChange(args: any[]): void {}

  /**
   *
   *获取树视图部件
   * @returns {*}
   * @memberof TreeViewEngine
   */
  public getTreeView(): any {
    return this.tree;
  }
}
